/**
 * Copyright (C) 2011 Moss Computing <support@mosscomputing.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.oslef.csv.table;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import org.oslef.csv.CSVReader;

/**
 * Assumes the first record in a CSV file is the header, each column containing
 * that column's name. Assumes that each column name is unique in a CSV file.
 */
public final class Table implements Iterable<Row> {

	private final File file;
	private final HeaderInfo info;
	
	public Table(File file) throws IOException {
		if (file == null) throw new NullPointerException();
		this.file = file;
		CSVReader r = new CSVReader(file);
		r.next();
		info = new HeaderInfo(r.next());
		r.close();
	}
	
	public HeaderInfo info() {
		return info;
	}

	public TableIterator iterator() {
		try {
			return new TableIterator(new FileReader(file));
		}
		catch (Exception ex) {
			throw new RuntimeException(ex);
		}
	}
}
